-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
 MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen
 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 BWoRf3ourqZYXFSrDgAnqy1myxaL8kslyl+q6JvHvOhiqp+Sgf7zH9Z3vg3jUgYf
 ci09Bx3Gn7UM70n/OGZ7Kw==

<SEC-DOCUMENT>0000950138-10-000750.txt : 20101119
<SEC-HEADER>0000950138-10-000750.hdr.sgml : 20101119
<ACCEPTANCE-DATETIME>20101119182350
ACCESSION NUMBER:		0000950138-10-000750
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20101117
FILED AS OF DATE:		20101119
DATE AS OF CHANGE:		20101119

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			REISLER WILLIAM
		CENTRAL INDEX KEY:			0001280974

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-32320
		FILM NUMBER:		101206828

	MAIL ADDRESS:	
		STREET 1:		1800 BALTIMORE
		STREET 2:		SUITE 300
		CITY:			KANSAS CITY
		STATE:			MO
		ZIP:			64108

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			BUILD A BEAR WORKSHOP INC
		CENTRAL INDEX KEY:			0001113809
		STANDARD INDUSTRIAL CLASSIFICATION:	RETAIL-HOBBY, TOY & GAME SHOPS [5945]
		IRS NUMBER:				431883836
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0101

	BUSINESS ADDRESS:	
		STREET 1:		1954 INNERBELT BUSINESS CENTRE DRIVE
		CITY:			ST LOUIS
		STATE:			MO
		ZIP:			63114
		BUSINESS PHONE:		314-423-8000

	MAIL ADDRESS:	
		STREET 1:		1954 INNERBELT BUSINESS CENTRE DRIVE
		CITY:			ST LOUIS
		STATE:			MO
		ZIP:			63114
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2010-11-17</periodOfReport>

    <issuer>
        <issuerCik>0001113809</issuerCik>
        <issuerName>BUILD A BEAR WORKSHOP INC</issuerName>
        <issuerTradingSymbol>BBW</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001280974</rptOwnerCik>
            <rptOwnerName>REISLER WILLIAM</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1800 BALTIMORE</rptOwnerStreet1>
            <rptOwnerStreet2>SUITE 300</rptOwnerStreet2>
            <rptOwnerCity>KANSAS CITY</rptOwnerCity>
            <rptOwnerState>MO</rptOwnerState>
            <rptOwnerZipCode>64108</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2010-11-17</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>12039</value>
                    <footnoteId id="F1"/>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>57072</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2010-11-19</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>8073</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>6.55</value>
                    <footnoteId id="F3"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>48999</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value></value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Grant to reporting person of 12,039 shares of restricted stock.  The shares vest October 28, 2011.</footnote>
        <footnote id="F2">Price is not applicable to grants of restircted stock.</footnote>
        <footnote id="F3">The reporting price is the weighted average price per share for 5 transactions in which the sale price ranges from $6.52 to $6.56.  The Reporting Person undertakes to provide full information regarding the number of shares sold at each separate sale price upon request of the Securities and Exchange Commission staff, the issuer or any security holder of the issuer.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Eric Fencl, Attorney-in-Fact</signatureName>
        <signatureDate>2010-11-19</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----
